Question

Quanto vale a letra "a"

Answer 1

Perceba que $\sqrt[3]{2} =2^{\frac{1}{3}}$

$2^{\frac{1}{3}}=3.3.2^{\frac{2}{6}}.2^{\frac{a}{6}}-2.2^{\frac{1}{3}}\\\\3.2^{\frac{1}{3}}=3.2^{\frac{2}{6}}.2^{\frac{a}{6}}\\\\2^{\frac{1}{3}}=2^{\frac{2}{6}+\frac{a}{6}}\\\\\frac{1}{3}=\frac{2}{6}+\frac{a}{6}\\\\\frac{1}{3}=\frac{1}{3}+\frac{a}{6}\\\\\frac{a}{6}=0 \Rightarrow a=0$